桁架式钢骨混凝土梁-钢骨混凝土柱梁柱组合构件抗震性能试验研究
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摘要
提出了一种由桁架式钢骨混凝土(SRC)梁和钢骨混凝土(SRC)柱组成的框架结构新的节点形式。为了研究这种新型梁柱组合构件的抗震性能,对8个桁架式钢骨混凝土梁-钢骨混凝土柱框架边节点进行了低周反复荷载试验。试验观察并记录了各节点试件的破坏形态,测得其梁端荷载-位移滞回曲线、节点剪切变形、骨架曲线和梁端荷载-转角滞回曲线。以试验结果为基础,对节点的延性、耗能性能、承载力及刚度退化等抗震耗能性能进行了分析,讨论了含钢率、轴压比及角钢腹杆尺寸对节点受力性能的影响。研究结果表明,这种新型桁架式钢骨混凝土框架节点具有良好的延性及耗能性能,为其工程应用提供了理论依据。
A new type of frame joint with steel reinforced concrete( SRC) column-reinforced concrete( RC) beam encased steel truss was put forward. Reversed cyclic loading tests on eight specimens were conducted to intensively investigate the seismic behaviors of the beam-column combined components. The failure processes of eight frame joints under low-cyclic reversed loading were observed and recorded. And the load-displacement hysteretic loops,shear behavior of the joint core,skeleton,curve,load-intersection angle hysteretic loops etc. of the test subassemblies were tested. Then the seismic behaviors such as the ductility,energy dissipation capacity,and strength and stiffness degradations were analyzed. The influential factors,such as the steel proportion,axial compression ratio and size of angle iron 's web member,on the mechanical performance of joints were discussed. The results indicate that the joints with SRC column RC beam encased steel truss have good ductility and energy dissipation capacity. It provides theoretical basis for engineering application of this kind of structures.
A new type of frame joint with steel reinforced concrete( SRC) column-reinforced concrete( RC) beam encased steel truss was put forward. Reversed cyclic loading tests on eight specimens were conducted to intensively investigate the seismic behaviors of the beam-column combined components. The failure processes of eight frame joints under low-cyclic reversed loading were observed and recorded. And the load-displacement hysteretic loops,shear behavior of the joint core,skeleton,curve,load-intersection angle hysteretic loops etc. of the test subassemblies were tested. Then the seismic behaviors such as the ductility,energy dissipation capacity,and strength and stiffness degradations were analyzed. The influential factors,such as the steel proportion,axial compression ratio and size of angle iron 's web member,on the mechanical performance of joints were discussed. The results indicate that the joints with SRC column RC beam encased steel truss have good ductility and energy dissipation capacity. It provides theoretical basis for engineering application of this kind of structures.
引文
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[14]ZHANG Y F,ZHAO J H,CAI C S.Seismic behavior of ring beam joints between concrete-filled twin steel tubes columns and reinforced concrete beams[J].Engineering Structures,2012,39(8):1-10.
[15]陈宗平,徐金俊,薛建阳.型钢混凝土异形柱-钢梁空间边节点的抗震性能及影响因素分析[J].工程力学,2015,32(2):105-113.CHEN Zongping,XU Jinjun,XUE Jianyang.Seismic behavior and influence factor analysis on 3D side joints composed of steel reinforced concrete special-shaped columns and steel beams[J].Engineering Mechanics,2015,32(2):105-113.
[16]王妮,陈宗平,陈宇良.反复荷载下型钢混凝土异形柱空间角节点的破坏机理及损伤分析[J].工程力学,2015,32(3):140-150.WANG Ni,CHEN Zongping,CHEN Yuliang.Failure mechanism and damage analysis of space corner joints of SRC L-shaped columns under cyclic loading[J].Engineering Mechanics,2015,32(3):140-150.
[17]樊健生,陶慕轩,聂建国,等.钢骨混凝土柱-钢桁架梁组合节点抗震性能试验研究[J].建筑结构学报,2010,31(2):1-11.FAN Jiansheng,TAO Muxuan,NIE Jianguo,et al.Experimental research on seismic behavior of steel reinforced concrete column-steel truss beam composite joints[J].Journal of Building Structures,2010,31(2):1-11.
[18]何益斌,黄频,郭健,等.方钢管钢骨混凝土柱与钢梁端板螺栓连接节点抗震性能试验研究[J].建筑结构学报,2012,33(7):116-125.HE Yibin,HUANG Pin,GUO Jian,et al.Experimental study on seismic behavior of steel-reinforced concrete square column and steel beam joint with bolted end-plate[J].Journal of Building Structures,2012,33(7):116-125.
[19]邓志恒,唐光暹,宁应金,等.桁架式钢骨混凝土梁-钢筋混凝土柱节点抗震性能试验研究[J].建筑结构学报,2012,33(8):75-83.DENG Zhiheng,TANG Guangxian,NING Yingjin,et al.Experimental research on seismic behavior of frame joints with steel reinforced concrete beam encased steel truss[J].Journal of Building Structures,2012,33(8):75-83.
[20]郑山锁,孙龙飞,司楠,等.型钢混凝土框架结构失效模式的识别和优化[J].振动与冲击,2014,33(4):167-172.ZHENG Shansuo,SUN Longfei,SI Nan,et al.Recognition and optimization for failure modes of SRC frame structures[J].Journal of Vibration and Shock,2014,33(4):167-172.
[2]贾金青,姚大立,余芳.预应力型钢超高强混凝土梁受剪承载力试验研究[J].工程力学,2014,31(8):126-133.JIA Jinqing,YAO Dali,YU Fang.Experimental study on shear capacity of prestressed I-steel ultrahigh reinforced concrete beams[J].Engineering Mechanics,2014,31(8):126-133.
[3]朱伟庆,贾金青.型钢超高强混凝土柱抗震性能试验研究[J].建筑结构学报,2015,36(4):57-67.ZHU Weiqing,JIA Jinqing.Experimental study on seismic behavior of steel reinforced high strength concrete columns[J].Journal of Building Structures,2015,36(4):57-67.
[4]WANG X Y,SU Y S,YAN L B.Experimental and numerical study on steel reinforced high-strength concrete short-leg shear walls[J].Journal of Constructional Steel Research,2014,101(10):242-253.
[5]刘祖强,薛建阳,马辉,等.型钢再生混凝土柱正截面承载力试验及数值模拟[J].工程力学,2015,32(1):81-87.LIU Zuqiang,XUE Jianyang,MA Hui,et al.Testing and numerical simulation of the normal cross-section bearing capacity of steel reinforced recycled concrete columns[J].Engineering Mechanics,2015,32(1):81-87.
[6]陈宗平,钟铭,陈宇良,等.型钢再生混凝土偏压柱受力性能试验及承载力计算[J].工程力学,2014,31(4):160-170.CHEN Zongping,ZHONG Ming,CHEN Yuliang,et al.Mechanical behavior and computed bearing capacity of steel reinforced recycled-aggregate-concrete columns under eccentric loading[J].Engineering Mechanics,2014,31(4):160-170.
[7]薛建阳,鲍雨泽,任瑞,等.低周反复荷载下型钢再生混凝土框架中节点抗震性能试验研究[J].土木工程学报,2014,47(10):1-8.XUE Jianyang,BAO Yuze,REN Rui,et al.Experimental study on seismic performance of steel reinforced recycled concrete inner-frame joints under low-cyclic reversed loading[J].China Civil Engineering Journal,2014,47(10):1-8.
[8]邓志恒,杨立军,莫广周.桁架式钢骨混凝土T形梁抗弯性能试验研究[J].建筑结构,2014,44(16):50-54.DENG Zhiheng,YANG Lijun,MO Guangzhou.Experimental research on the bending performance of T-shaped reinforced concrete beams encased steel truss[J].Building Structure,2014,44(16):50-54.
[9]ZHOU X H,YAN B,LIU J P.Behavior of square tubed steel reinforced-concrete(SRC)columns under eccentric compression[J].Thin-Walled Structures,2015,91:129-138.
[10]XIANG K,WANG G H.Experimental study on temperature distribution of concrete filled steel tube reinforced concrete square short columns[J].Procedia Engineering,2014,71(1):16-21.
[11]傅剑平,赵仕兴,陈刚,等.格构式型钢混凝土柱延性性能的有限元分析[J].土木工程学报,2015,48(3):17-24.FU Jianping,ZHAO Shixing,CHEN Gang,et al.Finite element analysis on the ductility behavior of lattice steel reinforced concrete column[J].China Civil Engineering Journal,2015,48(3):17-24.
[12]CHEN Q J,CAI J,BRADFORD M A,et al.Seismic behaviour of a through-beam connection between concretefilled steel tubular columns and reinforced concrete beams[J].Engineering Structures,2014,80:24-39.
[13]TAO M X,FAN J S,NIE J G.Seismic behavior of steel reinforced concrete column-steel truss beam hybrid joints[J].Engineering Structures,2013,56(6):1557-1569.
[14]ZHANG Y F,ZHAO J H,CAI C S.Seismic behavior of ring beam joints between concrete-filled twin steel tubes columns and reinforced concrete beams[J].Engineering Structures,2012,39(8):1-10.
[15]陈宗平,徐金俊,薛建阳.型钢混凝土异形柱-钢梁空间边节点的抗震性能及影响因素分析[J].工程力学,2015,32(2):105-113.CHEN Zongping,XU Jinjun,XUE Jianyang.Seismic behavior and influence factor analysis on 3D side joints composed of steel reinforced concrete special-shaped columns and steel beams[J].Engineering Mechanics,2015,32(2):105-113.
[16]王妮,陈宗平,陈宇良.反复荷载下型钢混凝土异形柱空间角节点的破坏机理及损伤分析[J].工程力学,2015,32(3):140-150.WANG Ni,CHEN Zongping,CHEN Yuliang.Failure mechanism and damage analysis of space corner joints of SRC L-shaped columns under cyclic loading[J].Engineering Mechanics,2015,32(3):140-150.
[17]樊健生,陶慕轩,聂建国,等.钢骨混凝土柱-钢桁架梁组合节点抗震性能试验研究[J].建筑结构学报,2010,31(2):1-11.FAN Jiansheng,TAO Muxuan,NIE Jianguo,et al.Experimental research on seismic behavior of steel reinforced concrete column-steel truss beam composite joints[J].Journal of Building Structures,2010,31(2):1-11.
[18]何益斌,黄频,郭健,等.方钢管钢骨混凝土柱与钢梁端板螺栓连接节点抗震性能试验研究[J].建筑结构学报,2012,33(7):116-125.HE Yibin,HUANG Pin,GUO Jian,et al.Experimental study on seismic behavior of steel-reinforced concrete square column and steel beam joint with bolted end-plate[J].Journal of Building Structures,2012,33(7):116-125.
[19]邓志恒,唐光暹,宁应金,等.桁架式钢骨混凝土梁-钢筋混凝土柱节点抗震性能试验研究[J].建筑结构学报,2012,33(8):75-83.DENG Zhiheng,TANG Guangxian,NING Yingjin,et al.Experimental research on seismic behavior of frame joints with steel reinforced concrete beam encased steel truss[J].Journal of Building Structures,2012,33(8):75-83.
[20]郑山锁,孙龙飞,司楠,等.型钢混凝土框架结构失效模式的识别和优化[J].振动与冲击,2014,33(4):167-172.ZHENG Shansuo,SUN Longfei,SI Nan,et al.Recognition and optimization for failure modes of SRC frame structures[J].Journal of Vibration and Shock,2014,33(4):167-172.